Boiler



(No Mendel.)

0.3. HAYNBS.

BOILER.

No. 245,822'. Patented: Aug. 16,1881.

WITNESSES UNITED STATES PATENT OFFICE.

CORNELIUS E. HAYNES, OF BOSTON, MASSACHUSETTS.

BOILER.

SPECIFICATION forming part of Letters Patent No. 245,822, dated August16, 1881.

Application tiled February 14, 1881.

To all whom fit may concern Beit known that I, CORNELIUS E. HAYNEs, ot'Boston, in the county ot' Suffolk and State of Massachusetts, haveinvented an Improve- Yment in Boilers, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, making part of this specification, in which- Figure 1 is anelevation of a boiler constructedin accordance with myinvention. Fig. 2is a vertical section through the same. Fig. 3 is a transverse section.

The object of my invention is to produce a boiler for bot water andother purposes at a much less cost than heretofore, and it consists incertain details ot' construction which will behcreinafter moreparticularly described and specitically claimed.

In the drawings, A represents a boiler for supplying hot water to thedifferent apartments ot a building. This boiler, which is made ot'metal, is corrugated or fluted, as shown-to wit, from end to end instraightand parallel lines and all roundfor the purpose ot' resistingthe internal pressure ot' water or steam or external pressure caused bya vacuum formed within it. The top a ot' this loiler A is provided witha flange, b, which projects down over the main portion, and is securedthereto by rivets or solder, as may be found most desirable.

The bottom c, which has a corrugated edge to match with and tightly fitinto the corrugations of thepboiler, is secured to the main portion ofthe boiler A by means ot' bolts or rivets passing through the iiange dof the bottom c, which projects down on the inside ot' the main portionA, and it will be seen that by this construction the bottom c can easilybe removed when required to make repairs, and also to obtain access tothe interior of the boiler.

The rings or braces f have corrugated edges to :tit the corrugations ofthe boiler, and are placed upon the inside of the boiler and se- (Nomodel.)

cured thereto in any suitable manner, for the purpose ofstrengtheningthe boiler when made of thin material, and also to serve the purpose otkeeping the boiler in its proper shape. In practice IV have found thatby making the corrugations as shown in Fig. S-that is, one large and onesmall alternately-it greatly adds to the strength ot" the boilerinresisting pressure from within, and also serves to retain the boiler inits proper shape.

A boiler constructed as above described can be easily and cheaply madeand is exceedingly strong and durable. Furthermore, much thinner andlighter material can be employed in its construction than has heretoforebeen found practicable, while it will withstand a much greater pressureoutwardly or inwardly per square inch than boilers ot' the oldconstruction.

I am aware that the broad idea ot' corrugatin g a steam-boiler is notnew, and that sectional boilers have been corrugated at right angleswith their length, and other boilers have been corrugated in some degreehorizontally, and also some spira-ll y, and also that vinternalstrengthening-bands have been used in such boilers.

What I claim is as follows:

1. The boiler A, corrugated from end to end in parallel lines, andprovided with the internal annular brace, f, having a corrugated edge,substantially as shown and described.

2. The boilerA, corrugated in parallel lines from end'to end andentirelyraround, and provided with the internal annularstrengtheningbrace, f, as described, and the bottom o, havin g acorrugated edge, all substantially as described. t

Boston, January 29, 1.881.

CORNELIUS E. HAYNES.

In presence of- W. J. CAMBRIDGE, L. G. SOUTHARD.

